Minwoo Im - Staff Software Engineer at Samsung

Minwoo Im

Staff Software Engineer at Samsung

Hwaseong-si, South Korea

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Summary

👤

Senior

🎓

Top School

Minwoo Im is a Staff Software Engineer with eight years of experience specializing in NVMe/SAS SSD controller verification, storage firmware, and system software. Based at Samsung in Hwaseong-si, he develops storage and memory controller verification frameworks while contributing to open-source projects like the Linux kernel, QEMU, and the widely used fio and nvme-cli tools. His io_uring_cmd enhancements to fio and pragmatic fixes in nvme-cli show a focus on low-level NVMe command correctness, performance control, and usable tooling (including JSON output and clearer hexadecimal reporting). Combining a master's in computer science from Seoul National University with hands-on controller validation work, he bridges academic rigor and production-quality systems engineering. Colleagues rely on him for nuanced protocol fixes and improvements that uncover subtle device behaviors before they reach customers.

8 years of coding experience

Master's degree, Computer Science and Engineering, Master's degree, Computer Science and Engineering at Seoul National University

Bachelor's degree, Computer Engineering, Bachelor's degree, Computer Engineering at Konkuk University

English, Korean

Github Skills (20)

device-management10

qemu10

io-uring10

command-line-interface10

c1110

nvme10

c1710

blockdevice10

virtualization10

command-line10

emulation10

cli10

linux9

performance-optimization9

low-level-programming9

Programming languages (2)

CPython

Github contributions (5)

linux-nvme/nvme-cli

Oct 2017 - Nov 2021

NVMe management command line interface.

Role in this project:

Back-end Developer

Contributions:1 review, 149 commits, 110 PRs in 4 years 1 month

Contributions summary:Minwoo primarily contributed to the NVMe management command-line interface by enhancing its functionality and fixing bugs. Their work involved making memory addresses in hexadecimal format for better readability and correcting bitmasks in the number of RPMB units. They also updated the code to incorporate constants defined in `nvme.h` and included new features related to boot partitions. Furthermore, the user refactored the `sanitize-log` command, and modified several commands to support JSON output.

management-commandcommand-line-interfacenvmecli

axboe/fio

Dec 2017 - Mar 2025

Flexible I/O Tester

Role in this project:

Back-end Developer

Contributions:11 reviews, 6 PRs, 21 comments in 7 years 3 months

Contributions summary:Minwoo primarily contributed to the `io_uring_cmd` ioengine within the fio project, focusing on NVMe-related functionalities. Their work involved fixing error handling, adding new options for NVMe command control (e.g., FUA flags, write modes, compare), and supporting FLUSH commands. The user also updated the documentation, and integrated a test script to ensure correct behavior. These contributions suggest a focus on enhancing and extending the capabilities of the io_uring_cmd engine.

testingflexible

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